As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AIRTURN BACK TO SJO. EXCESSIVE RUDDER TRIM AFTER TAKE-OFF WITH UNCOMMANDED RUDDER/ROLL. EMERGENCY DECLARED. MAINTENANCE FCF REQUIRED TO CONFIRM POSITIVE FIX FOR EXCESSIVE L,ATERAL TRIM ADJUSTMENT CHECK IAW AMM 27-01-00-501. FUNCTIONAL CHECK FLIGHT WAS SATISFACTORY.